Fire-door.



T. E. COLLINS.

FIRE DOOR.

APPLICATION FILED MAY 18. mos.

Patented Jul 6, 1909.

Z SHEETS-SEER? l.

Men/26R T E. COLLINS.

FIRE DOOR;

APPLICATION FILM; MAY 1a, 1908.

Patented July 6, 1909.

THOMAS E. COLLTNS, OF CHICAGO, ILLINOIS.

FIRE -DOOB.

To all whom it may concern:

Be it known that I, THOMAS E. COLLINS, a citizen of the United States,residing at Chicago, in the county of Cook and State of 'Illinois, haveinvented a new and useful Im-.

rovement in F ire-Doors, of which the folowing is a specification.

My invention relates particularly to rolling shutters employed asfire-doors; and my rlmary object is to provide means simplh ying theconstruction of such doors as well as improved means for eflecting theautomatic closing in the event of fire.

My improvements are illustrated in the preferred embodiment in theaccompanying drawings, in which- Figure 1 represents a section of afire-wall having a door constructed in accordance with my improvements;Fig. 2, an enlarged broken sectional View, showing the drum whichsupports the shutter and the gears connected therewith; 3, asectiontaken as indicated at line 3 of g. 2; Fig. 4, a broken persective view of the casing orhood in whici the drum and shutter arenormally housed, this view showing also a portion of the means forlocking the balancing spring under a given tension; Fi 5, an innerperspective view of a gear w ich has been removed from the spindleorstud a pearing near the lower portion of Fi 4; Fig. 6, a brokenclevational view of the shutter em ployed Fig. 7, a section of theshutter taken as indicated at line 7 of Fi 8, the section being on alarger scale than Fig. 8, however; Fig. 8, a section taken as indicatedat'line 8 of Fig. (3; and Fig. 9, a perspective view of a clip or runnerwhich is shown applied to the end-portions of alternate slats or bars ofthe shutter in Fig. 6.

In the construction i sents a lire-wall having a door opening A equip edwith the usual Z-bar guides A; B, a s iutter adapted to' work in saidguides;

3, a drum with which the upper end ofthe shutter is connected in anydesired manner (not shown); C, C", a pair of brackets supported by thewall above the door-o cning and upon which is mounted a 1100f G in whichthe drum and shutter are normally housed; C, a shaft journaled in thebracket (Fund in the bearing with which the int c rior of the drum 0 isprovided; a counterbalancing spring having one end connected with thedrum and the other end connected with the shaft 0 D, a pinion fixedlysecured llustrated, repre- Specification of Letters Patent; Applicationfiled ma 1a, 1908. Serial Nb. 433,391.

on the projecting end of the shaft 0*; Dfia Patented July 6, 1909.

gear meshing with the pinion D and journaled on a stub-shaft Dprojecting from'the bracket C D a bell-crank lever sup orted on a pivotprojecting from the bracl: and equipped with teeth normally engaging theteeth of the gear D D bell-crank lever normally holding the lover D inthe gear locking position; and D a wire connecting the lever D with astationary art, said wire being provided with a fusible ink D", whichisordinarily located above the vertical cen tral line of the door.

The guides A for the shutter may be of any suitable construction.licated, Z-bars are commonly employed for forming such guides. Theshutter B comprises slats 1. connected by hinges 2. In

common practice, the slats or bars of the shutter are formed ofsheet-metal, each slot having its longitudinal edge- )ortions curved toform lunged members. he lnnge men;-

As has been ins.

bers slide longitudinally into each other, thus i connecting the barstogether. I provide improved end-cli )s 3 for maintaining the slats orbars of the s .utter in proper relation after they have been connectedin the usual man;

ner by telescoping the hinge parts'with relation to each other. Eachclip 3 comprises a shank 4 and a head 5 which are formed'intew gral witheach other by stamping from sheetmetal. This is accomplishei by-bendingthe part 5- at right-angles to the )art 4. The part 5 thus extendstransverse y with relation to the shank 4 and in a plane at right anglesto the plane of the shan 4. The end ortions 6 of the part 5 extendbeyond the littoral edges 7 of the shank, so that when the shank issecured to one slat the proi'ectingportions 6 will serve to lock the arjacent slats against longitudinal movement. By employinga clip at eachend of alternate slats, the slats are all properly secured againstlongitudinal movement with relation to each other. The projections orlugs 6 are struck or dished outwardly, indicated at 8, thereby providingsmall bosses or bearings ada ted to engage the walls fi) oi the guides A'1 1e drum G is provided at one end with a stub-shaft 10 whichisjournalcd in a bearing in thebracket O. The inner end of the shaft (3is journalcd in a bearing 11 with which the drum (.7 is providedinteriorly. The bearing 1]. is rigidly secured to the drum, and one endof the spring is connected with said hearing. The other end of the isprovided near one end and through a hear in; with which the bracket isprovided,

' the pinion i) being secured on, the shaft outsidd the bracket Theprojecting end of the shalt is equipped with an angular mcmher 14 towhich a crank may he applied for the purpose of applying tension to thespring" U. The gear D is equipped on its inner side with a log 1:; andthe bracket C is equipped on its outer sidcwith a lug or stop 16 whichwill be encountered by the lug: or stop 15 when the year D rotates inthe direction indicated by the arrow in Fig. 3, which will occur whenthe gear-locking lover I) is released, owing to the fusing of the linki).

The lever B is supported on a pivot 17 which projects from the outersurface of the bracket C. The short arm of the lover D norn'iall standsin a substantially vertical The spring is, in practice, put undersufficient tension to serve as a counter-bal.-

spring Owing to the partial relief of the co ers tension upon thespring, the shutter will fall under its own weight and close thedooropening. lit the same time, the tension upon the spring will besufficient to prevent undue shock and avoid injury'to the door,regardless of the size and weight of the door The foregoing detaileddescription has been given for clearness of understanding only. and noundue limitation is to be understood therefrom.

What I regard as new, and desire to secure by Letters Iate-nt, is

1. In aconstrnction of the character set iorth, the cinnbination of ashutter, a drum connected therewith, a spring in said drum and connectedtherewith, a shaft extending; into said drum and connected with said.spring, a pinion secured on said shalt, a gear meshing with said pinionand equipped with a stop, a stationary stop co-actirw with saidfirst-named stop, a gear-locking lever, and holding means tor said leverprovided with a fusible connection.

' 2. in a cons/motion oi the character set l'orth, the combination ol apnir ol' brackets, a drum equipped at one end with. a shaft jmirnaledinv one of said brackets, a shall; iournolcd in the other bracket andextending into said drum, n spring, connected with said drum and withsaid second-named shaft, a pinion sccu red on the on tor end of saidsecondnained shalt, a gear meshing with said pinion and equipped on itsinner side with a sto a stop projecting from the" adjacent brac rot andco-acting with said first-named stop, a gear-locking lover, a pivottherefor projecting from the adjacent bracket, or second lever, a pivottherefor extending substantially perpendicular to said first-namedpivot, and a lusihle ii uh connected with said second-named In presenceof ltniirn A. Scimnrnn, WM. P. 0m".

